{"paper":{"title":"The radio halo in the merging cluster A3562","license":"","headline":"","cross_cats":[],"primary_cat":"astro-ph","authors_text":"D. Dallacasa, G. Brunetti, R. Morganti, R.W. Hunstead, S. Bardelli, S. Giacintucci, T. Venturi","submitted_at":"2003-02-05T14:35:38Z","abstract_excerpt":"we present new VLA observations at 1.4 GHz confirming the presence of a radio halo at the centre of the cluster A3562, in the core of the Shapley Concentration. We also report a detailed multifrequency radio study of the head tail galaxy J1333--3141, which is completely embedded in the halo emission. The radio halo has an irregular shape, and a largest linear size of $\\sim$ 620 kpc, which is among the smallest found in the literature. The source has a steep spectrum, i.e. $\\alpha_{843 MHz}^{1.4 GHz} \\sim 2$, and its total radio power, P$_{1.4 GHz} \\sim 2 \\times10^{23}$ W Hz$^{-1}$, is the lowe"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"astro-ph/0302080","kind":"arxiv","version":1},"verdict":{"id":null,"model_set":{},"created_at":null,"strongest_claim":"","one_line_summary":"","pipeline_version":null,"weakest_assumption":"","pith_extraction_headline":""},"references":{"count":0,"sample":[],"resolved_work":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57","internal_anchors":0},"formal_canon":{"evidence_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"author_claims":{"count":0,"strong_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"builder_version":"pith-number-builder-2026-05-17-v1"}